Fuel pumps eigher work or they don't. There is a slim chance that it's the pump, but I would bet money the pump is good. My next step would be inspect the fuel pump eccentic to make sure that it bolted down correctly. You are going to pull the fuel pump anyway, so it ain't as if you are tearing into something you haven't decided to do. Then again, I don't do things like other people do.

If you decide to check it, there are plenty of people who are waiting in line to help show you how; I'm pretty much done working on cars around here.